Durability, evaluation of CO2-injected ready mixed cement

耐久性、注入二氧化碳预拌水泥的评价

• 批准号: 485056-2015
• 负责人: Hooton, Douglas
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=584691
• 关键词: Durability; evaluation; CO2; injected; ready

CarbonCure Technologies has shown that concrete products (analogous to masonry blocks) produced with exposure to CO2 in the fresh or early hydration state benefit from improved strength, reduced water absorption, improved resistance to chloride permeability, and improved freeze-thaw performance. Most importantly, carbon dioxide absorption into the concrete permanently sequesters CO2 and allows the development of sustainable "green" building products with improved performance. In this project, CarbonCure Technologies (CCT) will investigate extending this technology to ready mixed concrete. CCT will arrange for industrial trials of their process at specific concrete plant locations in Toronto. CCT personnel will also work with University of Toronto researchers to cast specific test specimens for the various durability tests. The concrete specimens will be transported to the University of Toronto where they will be evaluated and analyzed using both standard and new, non-standard durability test methods. In addition, the process will be simulated in the laboratory to cast small scale specimens for use in some of the microscopic analysis. The results of this research will help CarbonCure Technologies better understand the mechanisms of improvements afforded by their CO2 process and allow them to demonstrate the benefits to their potential industrial clients.

CarbonCure Technologies 表明，在新鲜或早期水化状态下暴露于 CO2 生产的混凝土产品（类似于砌块）可受益于提高强度、减少吸水性、提高抗氯化物渗透性以及改善冻融性能。最重要的是，混凝土吸收二氧化碳可以永久封存二氧化碳，并允许开发性能改进的可持续“绿色”建筑产品。 在该项目中，CarbonCure Technologies (CCT) 将研究将该技术扩展到预拌混凝土。 CCT 将安排在多伦多的特定混凝土工厂地点对其工艺进行工业试验。 CCT人员还将与多伦多大学研究人员合作，为各种耐久性测试铸造特定的测试样本。混凝土样本将被运送到多伦多大学，在那里将使用标准和新的非标准耐久性测试方法对其进行评估和分析。此外，该过程将在实验室中进行模拟，以铸造小尺寸样本，用于某些显微分析。这项研究的结果将帮助 CarbonCure Technologies 更好地了解其二氧化碳工艺所提供的改进机制，并让他们能够展示其潜力的好处 工业客户。